#include<iostream>
#include<string>
#include<vector>
#include<fstream>
#include "Http.hpp"
static size_t Split(const std::string& src,const std::string& sep,std::vector<std::string>& result)
{
    int offset = 0;
    while(offset<src.size())
    {
        int pos = src.find(sep,offset);
        if(pos==std::string::npos)
        {
            result.push_back(src.substr(offset));
            return result.size();
        }
            if(pos==offset)
            {
                offset += sep.size();
                continue;
            }
            result.push_back(src.substr(offset,pos-offset));
            offset = pos + sep.size();
        }
        return result.size();
}
static bool ReadFile(const std::string& filename,std::string& buff)
{
    std::ifstream ifs(filename,std::ios::binary);
    if(ifs.is_open()==false)
    {
        DLOG("打开文件失败");
        return false;
    }
    //先获取文件的总大小
    int fsize = 0;
    ifs.seekg(0,ifs.end);
    fsize = ifs.tellg();
    ifs.seekg(0,ifs.beg);
    buff.resize(fsize);
    ifs.read(&buff[0],fsize);
    if(ifs.good()==false)
    {
        DLOG("读取文件内容失败");
        ifs.close();
        return false;
    }
    ifs.close();
    return true;
}
static bool WriteFile(const std::string& filename,const std::string& buff)
    {
        std::ofstream ofs(filename,std::ios::binary|std::ios::trunc);
        if(ofs.is_open()==false)
        {
            DLOG("打开文件失败");
            return false;
        }
        ofs.write(&buff[0],buff.size());
        if(ofs.good()==false)
        {
            DLOG("写入数据失败");
            ofs.close();
            return false;
        }
        ofs.close();
        return true;
    }
    static std::string UrlEncode(const std::string url,bool convert_space_to_plus)
    {
        std::string ret;
        for(auto &e:url)
        {
            if(e=='.'||e=='-'||e=='_'||e=='~'||isalnum(e))
            {
                ret+=e;
                continue;
            }
            if(e==' '&&convert_space_to_plus)
            {
                ret+="+";
                continue;
            }
            //剩下的都需要进行编码
            char buf[4]={0};
            snprintf(buf,4,"%%%02X",e);
            ret+=buf;
        }
        return ret;
    }
        static int HEXTOI(char c)
    {
        if(c>='0'&&c<='9')
        {
            return c-'0';
        }
        else if(c>='a'&&c<='z')
        {
            return c-'a'+10;
        }
        else if(c>='A'&&c<='Z')
        {
            return c-'A'+10;
        }
        return -1;
    }
    static std::string UrlDecode(const std::string url,bool convert_space_to_plus)
    {
        std::string ret;
        for(int i = 0;i<url.size();i++)
        {
            if(url[i]=='+'&&convert_space_to_plus)
            {
                ret+=" ";
                continue;
            }
            if(url[i]=='%')
            {
                int v1 = HEXTOI(url[i+1]);
                int v2 = HEXTOI(url[i+2]);
                char v = (v1<<4)+v2;
                ret+=v;
                i+=2;
                continue;
            }
            ret+=url[i];
        }
        return ret;
    }
        static std::string StatuDesc(int code)
    {
        std::unordered_map<int,std::string> _statu_msg = {
            {100,  "Continue"},
            {101,  "Switching Protocol"},
            {102,  "Processing"},
            {103,  "Early Hints"},
            {200,  "OK"},
            {201,  "Created"},
            {202,  "Accepted"},
            {203,  "Non-Authoritative Information"},
            {204,  "No Content"},
            {205,  "Reset Content"},
            {206,  "Partial Content"},
            {207,  "Multi-Status"},
            {208,  "Already Reported"},
            {226,  "IM Used"},
            {300,  "Multiple Choice"},
            {301,  "Moved Permanently"},
            {302,  "Found"},
            {303,  "See Other"},
            {304,  "Not Modified"},
            {305,  "Use Proxy"},
            {306,  "unused"},
            {307,  "Temporary Redirect"},
            {308,  "Permanent Redirect"},
            {400,  "Bad Request"},
            {401,  "Unauthorized"},
            {402,  "Payment Required"},
            {403,  "Forbidden"},
            {404,  "Not Found"},
            {405,  "Method Not Allowed"},
            {406,  "Not Acceptable"},
            {407,  "Proxy Authentication Required"},
            {408,  "Request Timeout"},
            {409,  "Conflict"},
            {410,  "Gone"},
            {411,  "Length Required"},
            {412,  "Precondition Failed"},
            {413,  "Payload Too Large"},
            {414,  "URI Too Long"},
            {415,  "Unsupported Media Type"},
            {416,  "Range Not Satisfiable"},
            {417,  "Expectation Failed"},
            {418,  "I'm a teapot"},
            {421,  "Misdirected Request"},
            {422,  "Unprocessable Entity"},
            {423,  "Locked"},
            {424,  "Failed Dependency"},
            {425,  "Too Early"},
            {426,  "Upgrade Required"},
            {428,  "Precondition Required"},
            {429,  "Too Many Requests"},
            {431,  "Request Header Fields Too Large"},
            {451,  "Unavailable For Legal Reasons"},
            {501,  "Not Implemented"},
            {502,  "Bad Gateway"},
            {503,  "Service Unavailable"},
            {504,  "Gateway Timeout"},
            {505,  "HTTP Version Not Supported"},
            {506,  "Variant Also Negotiates"},
            {507,  "Insufficient Storage"},
            {508,  "Loop Detected"},
            {510,  "Not Extended"},
            {511,  "Network Authentication Required"}
        };
        auto it = _statu_msg.find(code);
        if(it==_statu_msg.end())
        {
            return "UnKnow";
        }
        return it->second;
    }
        //根据文件后缀名获取文件mime
    static std::string ExtMime(const std::string filename)
    {
        std::unordered_map<std::string,std::string> mimes = {
            {".aac",        "audio/aac"},
            {".abw",        "application/x-abiword"},
            {".arc",        "application/x-freearc"},
            {".avi",        "video/x-msvideo"},
            {".azw",        "application/vnd.amazon.ebook"},
            {".bin",        "application/octet-stream"},
            {".bmp",        "image/bmp"},
            {".bz",         "application/x-bzip"},
            {".bz2",        "application/x-bzip2"},
            {".csh",        "application/x-csh"},
            {".css",        "text/css"},
            {".csv",        "text/csv"},
            {".doc",        "application/msword"},
            {".docx",       "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
            {".eot",        "application/vnd.ms-fontobject"},
            {".epub",       "application/epub+zip"},
            {".gif",        "image/gif"},
            {".htm",        "text/html"},
            {".html",       "text/html"},
            {".ico",        "image/vnd.microsoft.icon"},
            {".ics",        "text/calendar"},
            {".jar",        "application/java-archive"},
            {".jpeg",       "image/jpeg"},
            {".jpg",        "image/jpeg"},
            {".js",         "text/javascript"},
            {".json",       "application/json"},
            {".jsonld",     "application/ld+json"},
            {".mid",        "audio/midi"},
            {".midi",       "audio/x-midi"},
            {".mjs",        "text/javascript"},
            {".mp3",        "audio/mpeg"},
            {".mpeg",       "video/mpeg"},
            {".mpkg",       "application/vnd.apple.installer+xml"},
            {".odp",        "application/vnd.oasis.opendocument.presentation"},
            {".ods",        "application/vnd.oasis.opendocument.spreadsheet"},
            {".odt",        "application/vnd.oasis.opendocument.text"},
            {".oga",        "audio/ogg"},
            {".ogv",        "video/ogg"},
            {".ogx",        "application/ogg"},
            {".otf",        "font/otf"},
            {".png",        "image/png"},
            {".pdf",        "application/pdf"},
            {".ppt",        "application/vnd.ms-powerpoint"},
            {".pptx",       "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
            {".rar",        "application/x-rar-compressed"},
            {".rtf",        "application/rtf"},
            {".sh",         "application/x-sh"},
            {".svg",        "image/svg+xml"},
            {".swf",        "application/x-shockwave-flash"},
            {".tar",        "application/x-tar"},
            {".tif",        "image/tiff"},
            {".tiff",       "image/tiff"},
            {".ttf",        "font/ttf"},
            {".txt",        "text/plain"},
            {".vsd",        "application/vnd.visio"},
            {".wav",        "audio/wav"},
            {".weba",       "audio/webm"},
            {".webm",       "video/webm"},
            {".webp",       "image/webp"},
            {".woff",       "font/woff"},
            {".woff2",      "font/woff2"},
            {".xhtml",      "application/xhtml+xml"},
            {".xls",        "application/vnd.ms-excel"},
            {".xlsx",       "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
            {".xml",        "application/xml"},
            {".xul",        "application/vnd.mozilla.xul+xml"},
            {".zip",        "application/zip"},
            {".3gp",        "video/3gpp"},
            {".3g2",        "video/3gpp2"},
            {".7z",         "application/x-7z-compressed"}
        };
        auto pos = filename.find_last_of(".");
        if(pos==std::string::npos)
        {
            return "application/octet-stream";
        }
        std::string ret = filename.substr(pos);
        auto it = mimes.find(ret);
        if(it==mimes.end())
        {
            return "application/octet-stream";
        }
        return it->second;
    }
       static bool IsDirectory(const std::string &filename)
    {
        struct stat st;
        int ret = stat(filename.c_str(),&st);
        if(ret<0)
        {
            return false;
        }
        return S_ISDIR(st.st_mode);
    }
    //判断一个文件是否是一个普通文件
    static bool IsRegular(const std::string &filename)
    {
        struct stat st;
        int ret = stat(filename.c_str(),&st);
        if(ret<0)
        {
            return false;
        }
        return S_ISREG(st.st_mode);
    }
    static bool ValidPath(const std::string pathname)
    {
        int level = 0;
        std::vector<std::string> src;
        Split(pathname,"/",src);
        for(auto &e:src)
        {
            if(e=="..")
            {
                level--;
                if(level<0)
                {
                    return false;
                }
                continue;
            }
            level++;
        }
        return true;
    }
int main()
{
    std::cout<<ValidPath("/html/../index")<<std::endl;
    std::cout<<IsDirectory("/html/../../index")<<std::endl;
    // std::cout<<IsRegular("tttt.hpp")<<std::endl;
    // std::cout<<IsRegular("./hhh")<<std::endl;


    // std::string str="c  ";//./index?name=cqy&password=
    // std::string ret = UrlEncode(str,true);
    // std::string tmp = UrlDecode(ret,true);
    // std::cout<<ret<<std::endl;
    // std::cout<<"["<<tmp<<"]"<<std::endl;
    // bool ret = ReadFile("./Http.hpp",str);
    // if(ret==false)
    // {
    //     DLOG("读取失败");
    //     return -1;
    // }
    // ret = WriteFile("./tttt.hpp",str);
    //std::cout<<str<<std::endl;
    return 0;
}